vp9_write_bit_buffer.h header statics converted to globals
Change-Id: I12c29a630da1fbc5508f11b61d182f9b527b3a35
diff --git a/vp9/encoder/vp9_write_bit_buffer.c b/vp9/encoder/vp9_write_bit_buffer.c
new file mode 100644
index 0000000..962d0ca
--- /dev/null
+++ b/vp9/encoder/vp9_write_bit_buffer.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2013 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "vp9/encoder/vp9_write_bit_buffer.h"
+
+size_t vp9_rb_bytes_written(struct vp9_write_bit_buffer *wb) {
+ return wb->bit_offset / CHAR_BIT + (wb->bit_offset % CHAR_BIT > 0);
+}
+
+void vp9_wb_write_bit(struct vp9_write_bit_buffer *wb, int bit) {
+ const int off = (int)wb->bit_offset;
+ const int p = off / CHAR_BIT;
+ const int q = CHAR_BIT - 1 - off % CHAR_BIT;
+ if (q == CHAR_BIT -1) {
+ wb->bit_buffer[p] = bit << q;
+ } else {
+ wb->bit_buffer[p] &= ~(1 << q);
+ wb->bit_buffer[p] |= bit << q;
+ }
+ wb->bit_offset = off + 1;
+}
+
+void vp9_wb_write_literal(struct vp9_write_bit_buffer *wb, int data, int bits) {
+ int bit;
+ for (bit = bits - 1; bit >= 0; bit--)
+ vp9_wb_write_bit(wb, (data >> bit) & 1);
+}
